Probability can’t capture its ambiguity or complexity. The defining characteristic of uncertainty is that, unlike risk, it is unquantifiable. There is no shortage of data, there’s too much! And it’s ambiguous, susceptible to a wide range of interpretations. Epidemiologists are fully confident there will be future epidemics but not when or what the pathogen will be. We know climate change is real but not in enough detail to decide whether to buy sandbags or move house. So it’s different from ignorance because, when we feel uncertain, we have enough information to glean how much more we are missing. Uncertainty is a mental state brought on when we know we don’t know something about the future. That instinctive rejection of Harari’s generational narcissism was valid then and more than justified today: 2014 was a cakewalk compared to 2022. ![]() She whispered to me, “what about the blitz? The Black Death? Come on …” I was torn between embarrassment, as heads scowled at a young woman who clearly didn’t know her place, and pride in her critical thinking. ![]() We are experiencing now the greatest uncertainty humanity has ever known.” Nine years ago, this statement by Yuval Harari provoked explosive laughter from my teenage daughter.
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